A P-N junction or semiconductor diode cannot be used as.
Correct answer: D. An amplifier
- A. A rectifier
- B. A detector
- C. An oscillator
- D. An amplifier
Explanation
Amplification is the process of increasing the strength of a signal. A diode is a passive component that cannot provide the power gain necessary for amplification. Active components like transistors are required for this function.
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About Alternating Current
Alternating current varies periodically, so phase relationships become essential when current passes through a resistor, capacitor or inductor. The chapter distinguishes resistance from capacitive and inductive reactance, explains phase lead and lag, and connects changing electric and magnetic fields with the production and properties of electromagnetic waves.
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